let  ob = {
	age: 18,
	// _ww: 3, 
  get ww(){
	return this._ww;
  },
  set ww(nvalue) {
	console.log('我是简写的setter方法');
	
	this._ww = nvalue;
  }
}

console.log(ob);
ob.ww = 333;

console.log(ob);

console.log(Object.getOwnPropertyDescriptors(ob));

